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IMG - D3 Announcement

明升体育app_明升体育-官网 Reports to Go Digital by 2025

New Digital Diamond Dossier
First to Launch in 2023

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July 2022 Birthstone Ruby

July Birthstone

Ruby: Bringing the Heat with Chromium

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SP22 G&G Issue Cover

New Gems & Gemology Issue

German Topaz, Emerald from Habachtal Part II, and 2022 Tucson Report

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2022 eLearning Landing Page

Education

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DOR Image Collection

Laboratory Service

明升体育app_明升体育-官网 Diamond Origin: A Program That Makes a 明升体育app_明升体育-官网

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2022 Education Schedule

Gemology & Jewelry Design

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明升体育app_明升体育-官网 iD100 Probe with Ring

明升体育app_明升体育-官网 iD100?

明升体育app_明升体育-官网 iD100 Gem Testing Device: Full Disclosure at Your Fingertips

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featured

Research & News

Examples include unheated brown specimens, heated rough material, and faceted stones.
Gem News International

Blue Zircon Reportedly from Malawi

A reported new source of blue zircon in Malawi yields rough material for beautiful finished stones in the gem trade.
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Knowledge Session Webinars
Webinar Series

明升体育app_明升体育-官网 Knowledge Sessions

Engage in webinars on the most diverse and pressing issues in gemology today, including gemstone origin, laboratory-grown stones and new discoveries in field gemology.
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Small trigons and a rough surface texture seen on a chondrodite crystal.
Micro-World

Chondrodite in Red Spinel from Mogok, Myanmar

The Bangkok lab recently encountered a single round crystal of chondrodite in red spinel, a possible indicator of Burmese origin.
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Diamond (left) and emerald (right) lenses.
Lab Notes

Two Antique Mughal Spectacles with Gemstone Lenses

Unique diamond and emerald-lensed spectacles from the Mughal Empire were tested in 明升体育app_明升体育-官网’s New York laboratory.
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“Healing Sisters” rings featuring amethyst and peridot.
明升体育app_明升体育-官网ed Stones Unearthed

明升体育app_明升体育-官网ed Stones from the Deep

The first installment of this column discusses the formation of colored stones from the crust-mantle transition and below.
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A 2.42 ct green diamond treated by radioactive salts.
Micro-World

Radioactive Green Diamond

The Carlsbad lab recently encountered a 2.42 ct green diamond showing signs of radiation treatment by the use of radioactive salts.
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Gems & Gemology

This Month's

Featured Gems

Featured Gem Peridot
Peridot

Found in lava, meteorites, and deep in the earth’s mantle, yellow-green peridot is the extreme gem.

Fancy 明升体育app_明升体育-官网 Diamond
Fancy 明升体育app_明升体育-官网 Diamond

Dazzling brilliance. Captivating 明升体育app_明升体育-官网 These are the planet’s most valued gems.

Diamond
Diamond

Diamonds are among nature’s most precious and beautiful creations.

Emerald Bluish Green Stone
Emerald

Emerald is the bluish green to green variety of beryl, a mineral species that includes aquamarine.

Featured Gem Citrine
Citrine

Citrine is the transparent, pale yellow to brownish orange variety of quartz.

View the Gem Encyclopedia

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